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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($)
shares in Thousands, $ in Thousands
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
 [1]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Beginning balance, value at Dec. 31, 2022 $ 11 [1] $ 793,952 $ (857,751) $ (6,330) $ (70,118)
Beginning balance (in shares) at Dec. 31, 2022 25 10,847 [1]        
Net income [1] (31,846) (31,846)
Foreign currency translation adjustment [1] (958) (958)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld [1] 51 51
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]   52        
Issuance of common shares in connection with a public offering, net of issuance costs $ 1 [1] 6,057 6,058
Issuance of common shares in connection with a public offering, net of issuance costs (in shares) [1]   804        
Share-based compensation [1] 6,030 6,030
Preferred stock dividends [1] 2,218 (2,218)
Ending balance, value at Sep. 30, 2023 $ 12 [1] 808,308 (891,815) (7,288) (90,783)
Ending balance (in shares) at Sep. 30, 2023 25 11,703 [1]        
Beginning balance, value at Jun. 30, 2023 $ 12 [1] 805,282 (869,254) (6,855) (70,815)
Beginning balance (in shares) at Jun. 30, 2023 25 11,687 [1]        
Net income [1] (21,805) (21,805)
Foreign currency translation adjustment [1] (433) (433)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld [1] 3 3
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]   16        
Issuance of common shares in connection with a public offering, net of issuance costs [1]        
Share-based compensation [1] 2,267 2,267
Preferred stock dividends [1] 756 (756)
Ending balance, value at Sep. 30, 2023 $ 12 [1] 808,308 (891,815) (7,288) (90,783)
Ending balance (in shares) at Sep. 30, 2023 25 11,703 [1]        
Beginning balance, value at Dec. 31, 2023 $ 12 [1] 810,138 (906,928) (5,327) (102,105)
Beginning balance (in shares) at Dec. 31, 2023 25 11,879 [1]        
Net income [1] 5,138 5,138
Foreign currency translation adjustment [1] (1,385) (1,385)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld [1] 207 207
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]   177        
Share-based compensation [1] 2,815 2,815
Preferred stock dividends [1] 2,425 (2,425)
Issuance of common stock in connection with debt restructurings $ 1 [1] 4,924 4,925
Issuance of common stock in connection with debt restructurings (in shares) [1]   487        
Issuance of common stock warrants in connection with debt restructurings [1] 5,342 5,342
Ending balance, value at Sep. 30, 2024 $ 13 [1] 825,851 (904,215) (6,712) (85,063)
Ending balance (in shares) at Sep. 30, 2024 25 12,543 [1]        
Beginning balance, value at Jun. 30, 2024 $ 12 [1] 816,002 (912,357) (5,420) (101,763)
Beginning balance (in shares) at Jun. 30, 2024 25 11,910 [1]        
Net income [1] 8,969 8,969
Foreign currency translation adjustment [1] (1,292) (1,292)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld [1] 213 213
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]   146        
Share-based compensation [1] 1,229 1,229
Preferred stock dividends [1] 827 (827)
Issuance of common stock in connection with debt restructurings $ 1 [1] 4,924 4,925
Issuance of common stock in connection with debt restructurings (in shares) [1]   487        
Issuance of common stock warrants in connection with debt restructurings [1] 2,656 2,656
Ending balance, value at Sep. 30, 2024 $ 13 [1] $ 825,851 $ (904,215) $ (6,712) $ (85,063)
Ending balance (in shares) at Sep. 30, 2024 25 12,543 [1]        
[1] Adjusted retroactively for reverse stock split that occurred on January 24, 2024, see Note 1